JPS6364818A - Window structure of vehicle - Google Patents

Abstract

PURPOSE:To prevent lowering of adhesion, by a method wherein, in a vehicle window, to which a lamination window glass to the inner side of which a resin layer is formed is mounted, the exposed boundary layer of a glass plate is positioned outer than a support frame, and an exposed surface and an inner resin layer are secured to the support frame by means of an adhesive with which to cover a boundary layer. CONSTITUTION:An exposed boundary layer 11 of a glass plate 2 is formed such that it is positioned outer than peripheral edge 13 of the opening part of a support frame 5. A puttylike adhesive 6 is coated so that the exposed layer 11 is covered with an end part 14 of an inner resin layer 1 and an exposed surface 15 of the glass plate 2, a laminated glass 4 is brought into contact with a portion 7, extended in parallel to the window of the support frame 5 for temporary adhesion. A resilient molding 10 is inserted in a gap 9 between the edge of the glass plate 2 and a portion 8 extended vertically to the window of the support frame 5. This constitution prevents exposure of the exposing layer to the open air and contact of it with water, prevents lowering of adhesion, and maintains resistance to penetration.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a window structure in which a laminated glass having a resin layer on the inside (indoor side) is attached to a vehicle window.

(Prior Art) Safety laminated glass, in which two glass plates are bonded together with an adhesive interlayer film, has been known for a long time as a windshield glass for automobiles and the like. In recent years, with the aim of improving the tear resistance of laminated glass, laminated glass has been proposed in which a resin layer is exposed on the inside and this is laminated with at least one glass plate (Japanese Patent Publication No. 55-29028 issue).

However, according to the knowledge of the present inventor, the external surface method (
If the Fukuschemakund method is adopted as is, it will be extremely difficult to maintain the original performance as safety laminated glass over a long period of time.

Specific KI! As shown in FIG. 3, a case will be described in which, for example, a safety laminated glass g4 consisting of an inner 11R resin layer l, a glass plate 2, and an inner second resin layer (intermediate resin layer) 3 is attached to the support frame 5. After applying the adhesive 6 to the outer peripheral surface of the resin layer 1,
Seven portions of the laminated glass 4 parallel to the window of the support frame 5 are brought into contact, and after temporary adhesion, the edges of the glass 114 and II of the support frame 5 are
! An elastic molding 10 is inserted into the gap 9 between the vertical part 8 and the vertical part 8.

At this time, the adhesive 6 may sometimes sink into the edge of the resin layer 1, but it almost never sinks all the way to the edge Jll of the resin layer 3. Therefore, the edges of the resin layer 3 and the resin layer 1 are constantly exposed and exposed to the atmosphere. are affected by the negative effects of rainwater that has entered the area. inner 2nd
For the resin layer (intermediate resin layer) 3, a plasticized polyvinyl butyral film with high impact energy absorption ability is generally used, and this film absorbs moisture from the atmosphere over time and will cause serious damage if the moisture content becomes high. . Specifically, as the water content increases, foaming, clouding, and peeling due to decreased adhesion to glass occur. In other words, it becomes difficult to ensure visibility, and even the penetration resistance, which is a basic performance requirement for safety laminated glass, cannot be achieved.

Further, as shown in FIG. 4, the outer peripheries of the first resin layer 1 and the second resin layer 3 inside the lath 4 are trimmed, and a part of the exposed surface of the glass plate 2 is coated with the adhesive 6. If the molding is fixed to
Since the structure 1) is exposed to the atmosphere, problems similar to those of the structure shown in FIG. 3 occur. Moreover, in the case of the structure shown in Figure 4,
It has been found that even when the laminated glass 4 is initially installed, the glass plate 2 near the exposed boundary line ll is easily broken when a passenger collides with the laminated glass 4.

In addition, in FIGS. 3 and 4s4, the case where the inner resin layer consists of the first resin layer 1 and the second resin layer 3 is illustrated, but even if it is a single resin layer, the exposed boundary line is exposed to the atmosphere. As long as it is maintained, performance deterioration, mainly due to a decrease in adhesion to glass, is inevitable over a long period of time.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned drawbacks of conventional window structures and the above-mentioned drawbacks confirmed by the inventor when laminated glass with a resin layer provided on the inside is installed in a vehicle. It was done for the purpose of

(Means for Solving the Problems) The vehicle window structure of the present invention has a structure in which a laminated glass having an inner resin layer and at least one glass plate is fixed to a support frame with an adhesive, When viewed from the inside, the glass plate is exposed over its entire circumference, the exposed boundary line is located on the outer peripheral side of the opening periphery of the support frame, and the exposed boundary line is covered with adhesive. The exposed surface and the end of the inner resin layer are fixed to a support frame, thereby achieving the above object.

The inner resin layer of the laminated glass used in the present invention is made of water-impermeable materials such as polyurethane, polyester, polyvinyl 7tulide, polyvinylidene chloride, cellulose acetate, ionized olefin polymer, acrylic polymer, phenoxy polymer, and polycarbonate. Resins are widely used. 31!
A thin layer of a metal or metal compound may be provided on the inside (surface) of these resin layers to impart functions such as abrasion resistance and heat ray reflection.

In addition, between the resin layer and the glass plate, a second resin layer (such as plasticized polyvinyl butyral, thermoplastic polyurethane, ionized olefin polymer, etc.) with good adhesion to glass and impact energy absorption is used. It is preferable to use it as an intermediate resin layer).

A conventionally known silicate inorganic glass may be used as the glass plate, but it may also be a laminated glass in which two inorganic glasses are bonded together using plasticized polyvinyl butyral or the like.

Further, the adhesive used for fixing the laminated glass to the support frame is not particularly limited, but a Frethane adhesive is preferably used.

The laminated glass 4 consists of the resin layer 12 and the inorganic glass plate 2.
It is fixed to a portion 7 of the support frame 5 parallel to the window via an adhesive 6.

Reference numeral 11 denotes an exposed boundary line formed by exposing the surface of the glass plate 2 by trimming the inner resin layer 1 (an inner resin layer having a small external size may be bonded to the glass plate from the beginning). The exposed boundary line 11 is located at the opening periphery 1 of the support frame 5.
It is arranged to be located outside of 3. If it is located on the inner side, even if the end of the inner resin layer is fixed to the support frame with an adhesive, the penetration resistance will be low and it will be difficult to put it into practical use.

In order to install the laminated glass 4 as a window of a vehicle, for example, the inner side 41!1, the edge 14 of the coconut layer 1 and the exposed surface 15 (not necessarily the entire area) K of the glass plate 2.

After applying K/(te-shaped adhesive) so that the exposed boundary line 11 is covered, the laminated glass 4 is brought into contact with the part 7 of the support frame 5 that is approximately parallel to the window, and after temporary adhesion, the end of the glass plate A is An elastic molding lO is inserted into the gap 9 between the edge and the window Kw of the support frame 5 & the vertical portions 8 and 7.

In the conventional safety film 2', which is laminated with an intermediate film 93 made of glass, for example, a 4-teg adhesive is applied in advance to the interlayer film 3 of the laminated glass n.
The laminated glass 4' may be applied to the support frame after being applied, or a single inner resin layer made of, for example, polyflex may be used instead of inserting the molding lO.

V (blank space below) (Example) An experimental example for confirming the penetration resistance and moisture resistance of the window structure of the present invention is shown below.

The aim of each characteristic was determined by the following method.

a) Penetration resistance In accordance with JIS standard R-3212, a 226 steel ball was dropped from a height of 4 m to check for penetration.

b) Humidity resistance The condition after 4 times is a according to JIS standard R-3212.
11 approved.

The adhesive force was measured using Fi90° beer test.

Experimental example 1) 305 tm square four-way thick float glass 2, α76
A thick plasticized polyvinyl butyral (PVB) film 3 and a 100/In polyethylene terephthalate (CPET) film 1 whose surface has been treated with a primer are superimposed and laminated through the processes of preliminary pressure bonding and main pressing (using an autoclave). A laminated glass with exposed PET film was prepared and trimmed to expose the surface of glass 2.

This laminated glass is 345m square and 280mm wide in the opening. 221) and was bonded at 125 fi during bonding.

In FIG. 5, the exposed boundary line is indicated by 11 (hidden hll), and one end of the adhesive 6 was flush with the opening edge 13 of the iron frame 16 as shown in FIG. 6(a).

The specimen thus obtained was placed on a penetration test support frame with the iron frame facing upward and the laminated glass facing downward, and the penetration resistance was confirmed.The result was 1st! It was as expected.

When the moisture resistance was tested using a similar specimen, the result was that it passed through the second barley.

Experimental Example 2) In place of the 4m thick glass in Experimental Example 1, a laminated glass consisting of λ5 thick glass/α76 thick PVB film/2.5cm thick glass was used, and α38m was used as the u76sm thick PVB film substitute. A specimen as shown in Figure 6 (b) was prepared in the same manner as in Experimental Example 1 except that a thick PVB film was used, and its moisture resistance was tested. As expected, the results were as shown in Table 2.

Comparative Experimental Example 1) A specimen as shown in Figure 6 (c) was prepared in the same manner as in Experimental Example 1 except that the inner a resin layer was not trimmed, and the moisture resistance was confirmed. I met you on the street.

Comparative Experimental Example 2) A specimen as shown in Figure 6) was prepared in the same manner as Experimental Example 2 except that the inner resin layer was not trimmed, and the moisture resistance was confirmed.The results are shown in Table 2. It was as follows.

Comparative Experimental Example 3) A specimen as shown in Fig. 6 (e) was prepared in the same manner as in Experimental Example 1 except that 15 cods were used during trimming, and the penetration resistance and moisture resistance were confirmed. :1k and as shown in Table 2.

Comparative Experimental Example 4) A specimen as shown in Fig. 6 (f) was prepared in the same manner as in Experimental Example 2 except that the length during trimming was 15 m, and the moisture resistance was set to a1. Met.

Table 1 (hereinafter referred to as margins) Table 2 (effects of the invention) The vehicle window structure of the present invention is constructed as described above, and the exposed surface and inner side of the glass plate are The end of the resin layer is adhesively fixed to the support frame.
The exposed boundary is not exposed to the atmosphere or comes into contact with water. Therefore, even after a long period of time, it will not become cloudy or cloudy.
There is almost no foaming, there is very little deterioration in adhesion to glass, and the initial performance can be maintained in terms of penetration resistance.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the O window structure of the present invention, FIG. 2 is a cross-sectional view of another embodiment of the present invention, and FIG. 3 is a cross-sectional view of an example of a conventional window structure. Fig. 4 is a sectional view showing another conventional example, Fig. 5 is a plan view of a specimen for confirming the characteristics of the window structure of the present invention, Fig. 6 h) is a shoulder in Fig. 5, ■An example of a cross-sectional view taken along the line, -) is another example, shi → ~
(f) is a sectional view of the main part of a specimen for confirming the characteristics of the conventional window structure. Explanation of symbols

Claims (1)

[Claims] 1 A structure in which laminated glass having an inner resin layer and at least one glass plate is fixed to a support frame with an adhesive, and the glass plate is exposed all around when viewed from the inside, and the exposed boundary line The exposed surface of the glass plate and the end of the inner resin layer were fixed to the support frame so that the glass plate was located on the outer peripheral side of the opening periphery of the support frame, and the exposed boundary line was covered with adhesive. A vehicle window structure characterized by: